Thanks for your replies.
I left a bit of code in there after trying it so please ignore that, it was however this line I commented out which is doing the sticky routines, this should have been the commented out code
add_action('pre_get_posts', array(get_class(), 'add_sticky_routines'));
I have now uncommented this line, made sure add sticky routines is back in there and it seems to be going fast now. Does it do some form of caching when they are first added. I am going to do further testing and if there are any issues I will raise a ticket on your site.
Thanks.
Neil
